ISO 7240-22:2017
Fire detection and alarm systems — Part 22: Smoke-detection equipment for ducts
ISO 7240-22:2017 specifies requirements, test methods and performance criteria for smoke-detection equipment for ducts (SDED) for use in fire detection and alarm systems installed in buildings (see ISO 7240‑1).
The SDED samples the air from a duct and detects smoke in the sample.
NOTE 1 A common method of operation is to use differential pressure arising from airflow in the duct.
The SDED can use smoke detectors complying with ISO 7240‑7 or other detectors complying with tests specified in ISO 7240-22:2017.
A common application for SDED is to detect visible smoke, for which detectors using scattered light or transmitted light can be more suitable. However, requirements for detectors using ionization are also included in ISO 7240-22:2017 for use in applications where detection of less visible fire aerosols is desired.
For the testing of other types of smoke detectors or smoke detectors working on different principles, ISO 7240-22:2017 can be used for guidance. Smoke detectors with special characteristics, developed for specific risks, are not covered.
NOTE 2 Certain types of detectors contain radioactive materials. The national requirements for radiation protection differ from country to country and are not specified in ISO 7240-22:2017.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Compliance
4.2 Visual alarm indication
4.3 Connection of ancillary devices
4.4 Monitoring of detachable detectors
4.5 Manufacturer's adjustments
4.6 On-site adjustment of response behaviour
4.7 Requirements for software-controlled smoke-detection equipment for ducts
4.7.1 General
4.7.2 Software design
4.7.3 Storage of programs and data
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
5.1.2 Mounting arrangements
5.1.3 Operating conditions for tests
5.1.4 Tolerances
5.1.5 Response threshold value
5.1.6 Provision for tests
5.1.7 Test schedule
5.1.8 Test report
5.2 Repeatability
5.2.1 Object of test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Reproducibility
5.3.1 Object of test
5.3.2 Test procedure
5.3.3 Requirements
5.4 Variation in supply parameters
5.4.1 Object of test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Dazzling
5.5.1 Object of test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Dry heat (operational)
5.6.1 Object of test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Cold (operational)
5.7.1 Object of test
5.7.2 Test procedure
5.7.3 Requirements
5.8 Damp heat, steady-state (operational)
5.8.1 Object of test
5.8.2 Test procedure
5.8.3 Requirements
5.9 Damp heat, steady-state (endurance)
5.9.1 Object of test
5.9.2 Test procedure
5.9.3 Requirements
5.10 Sulfur dioxide, SO2, corrosion (endurance)
5.10.1 Object of test
5.10.2 Test procedure
5.10.3 Requirements
5.11 Shock (operational)
5.11.1 Object of test
5.11.2 Test procedure
5.11.3 Requirements
5.12 Impact (operational)
5.12.1 Object of test
5.12.2 Test procedure
5.12.3 Requirements
5.13 Vibration, sinusoidal (operational)
5.13.1 Object of test
5.13.2 Test procedure
5.13.3 Requirements
5.14 Vibration, sinusoidal (endurance)
5.14.1 Object of test
5.14.2 Test procedure
5.14.3 Requirements
5.15 Air leakage
5.15.1 Object of test
5.15.2 Test procedure
5.15.3 Requirements
5.16 Electromagnetic compatibility (EMC) immunity tests (operational)
5.16.1 Object of test
5.16.2 Test procedure
5.16.3 Requirements
5.17 Fire sensitivity
5.17.1 Object of test
5.17.2 Test procedure
5.17.3 Requirements
6 Test report
7 Marking
8 Data
8.1 Hardware documentation
8.2 Software documentation
Annex A (normative) Smoke tunnel and fire test room arrangement for response measurements
Annex B (normative) Test aerosol for response threshold value measurements
Annex C (normative) Smoke-measuring instruments
Annex D (normative) Apparatus for dazzling test
Annex E (normative) Apparatus for impact test
Annex F (informative) Air-leakage test apparatus
Annex G (normative) Rapid smouldering (pyrolysis) wood fire (TF2)
Annex H (normative) Open plastics (polyurethane) fire (TF4)
Annex I (informative) Information concerning the construction of the smoke tunnel
Annex J (informative) Information concerning the construction of the measuring ionization chamber
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Compliance
4.2 Visual alarm indication
4.3 Connection of ancillary devices
4.4 Monitoring of detachable detectors
4.5 Manufacturer's adjustments
4.6 On-site adjustment of response behaviour
4.7 Requirements for software-controlled smoke-detection equipment for ducts
4.7.1 General
4.7.2 Software design
4.7.3 Storage of programs and data
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
5.1.2 Mounting arrangements
5.1.3 Operating conditions for tests
5.1.4 Tolerances
5.1.5 Response threshold value
5.1.6 Provision for tests
5.1.7 Test schedule
5.1.8 Test report
5.2 Repeatability
5.2.1 Object of test
5.2.2 Test procedure
5.2.3 Requirements
5.3 Reproducibility
5.3.1 Object of test
5.3.2 Test procedure
5.3.3 Requirements
5.4 Variation in supply parameters
5.4.1 Object of test
5.4.2 Test procedure
5.4.3 Requirements
5.5 Dazzling
5.5.1 Object of test
5.5.2 Test procedure
5.5.3 Requirements
5.6 Dry heat (operational)
5.6.1 Object of test
5.6.2 Test procedure
5.6.3 Requirements
5.7 Cold (operational)
5.7.1 Object of test
5.7.2 Test procedure
5.7.3 Requirements
5.8 Damp heat, steady-state (operational)
5.8.1 Object of test
5.8.2 Test procedure
5.8.3 Requirements
5.9 Damp heat, steady-state (endurance)
5.9.1 Object of test
5.9.2 Test procedure
5.9.3 Requirements
5.10 Sulfur dioxide, SO2, corrosion (endurance)
5.10.1 Object of test
5.10.2 Test procedure
5.10.3 Requirements
5.11 Shock (operational)
5.11.1 Object of test
5.11.2 Test procedure
5.11.3 Requirements
5.12 Impact (operational)
5.12.1 Object of test
5.12.2 Test procedure
5.12.3 Requirements
5.13 Vibration, sinusoidal (operational)
5.13.1 Object of test
5.13.2 Test procedure
5.13.3 Requirements
5.14 Vibration, sinusoidal (endurance)
5.14.1 Object of test
5.14.2 Test procedure
5.14.3 Requirements
5.15 Air leakage
5.15.1 Object of test
5.15.2 Test procedure
5.15.3 Requirements
5.16 Electromagnetic compatibility (EMC) immunity tests (operational)
5.16.1 Object of test
5.16.2 Test procedure
5.16.3 Requirements
5.17 Fire sensitivity
5.17.1 Object of test
5.17.2 Test procedure
5.17.3 Requirements
6 Test report
7 Marking
8 Data
8.1 Hardware documentation
8.2 Software documentation
Annex A (normative) Smoke tunnel and fire test room arrangement for response measurements
Annex B (normative) Test aerosol for response threshold value measurements
Annex C (normative) Smoke-measuring instruments
Annex D (normative) Apparatus for dazzling test
Annex E (normative) Apparatus for impact test
Annex F (informative) Air-leakage test apparatus
Annex G (normative) Rapid smouldering (pyrolysis) wood fire (TF2)
Annex H (normative) Open plastics (polyurethane) fire (TF4)
Annex I (informative) Information concerning the construction of the smoke tunnel
Annex J (informative) Information concerning the construction of the measuring ionization chamber
Bibliography